EP0415643A2 - Terminal assembly for linear magnetic component bobbin - Google Patents
Terminal assembly for linear magnetic component bobbin Download PDFInfo
- Publication number
- EP0415643A2 EP0415643A2 EP90309230A EP90309230A EP0415643A2 EP 0415643 A2 EP0415643 A2 EP 0415643A2 EP 90309230 A EP90309230 A EP 90309230A EP 90309230 A EP90309230 A EP 90309230A EP 0415643 A2 EP0415643 A2 EP 0415643A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- bobbin
- terminal
- winding
- support member
- phosphor bronze
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/04—Arrangements of electric connections to coils, e.g. leads
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/04—Arrangements of electric connections to coils, e.g. leads
- H01F2005/043—Arrangements of electric connections to coils, e.g. leads having multiple pin terminals, e.g. arranged in two parallel lines at both sides of the coil
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/04—Arrangements of electric connections to coils, e.g. leads
- H01F2005/046—Details of formers and pin terminals related to mounting on printed circuits
Definitions
- This invention relates to bobbin structures for magnetic components and in particular to a terminal assembly for a bobbin.
- bobbin terminals or pinouts are typically inserted into the underside of bobbin flange supports with the terminals remaining unformed. Only friction holds the bobbin terminals in their sockets.
- Bobbin terminals of board mounted magnetic components that are inserted in the bobbin in this manner, have a tendency to pull out of the bobbin.
- a typical arrangement is shown in Fig. 1 wherein the terminal 101 is inserted into a bobbin flange or mounting support member 102.
- the winding 103 of the bobbin is terminated by being wire-wrapped 104 about the terminal 101.
- the wire termination as wound has a vertical axis and in some applications may result in the magnetic component having a greater component height than is desirable. It is readily apparent that this arrangement permits the terminals to work their way out of the socket.
- Terminals have been formed with a bend in the terminal to secure the terminals into the bobbin as shown in Fig. 2.
- the terminal 201 is inserted into the topside of the bobbin support member 202.
- the forming of the terminal 201 still does not prevent the terminal 201 from working out of the support member 202 due to forces perpendicular to the planar surface of the printed circuit board on which it will be mounted.
- the winding 203 of the bobbin is, as shown, wound with a vertical axis and is terminated by being wound about the formed portion of the terminal 201 which is horizontal to the printed circuit board. Since the winding is attached externally to the terminal and beyond the perimeter of the bobbin support member 202, printed circuit board area is consumed unnecessarily.
- a new arrangement for attaching terminals to the bobbins of board mounted magnetic components reduces the amount of board real estate required for the component and increases the integrity of the terminal attachment to the bobbin.
- a new physical construction for attaching a phosphor bronze terminal to a plastic bobbin assembly permits a lower component height and a reduced footprint size as well as providing improved positive mechanical locking of the terminals to the bobbin.
- This mechanical locking is provided by the insertion of the attached end of the phosphor bronze terminal horizontally into the molded bobbin support member after which the terminal is formed by 90 degrees.
- the vertical member of the terminal is captured by slots provided in the outer surface of the bobbin.
- Support members prevent lateral movement of the terminal.
- the formed end, inserted into the bobbin is parallel to the printed circuit board surface, on which the bobbin is mounted, preventing the phosphor bronze terminal from working loose due to vibration and motion in the vertical axis direction.
- FIG. 1 A terminal mounting arrangement according to the prior art arrangement is shown in Fig. 1.
- This terminal 101 is unformed and is inserted vertically into a vertical blind aperture of the support member 102 of a bobbin structure.
- a wire termination 104 of winding 103 is wound about the terminal 101. It is easily recognizable that in this arrangement the terminal 101 is very susceptible to being worked out of the terminal aperture by vertical forces.
- the terminal 101 is subject to being pulled from the bobbin while the leads are undergoing any number of manufacturing processes, i.e., soldering, crimping to the board 110, etc.
- An alternative terminal mounting arrangement of the prior art shown in Fig. 2 utilizes an L shaped terminal 201 having its short arm formed over the top rim of the bobbin support member aperture. This arrangement provides the inserted terminal with resistance to downward vertical forces although it is still susceptible to being worked out of the aperture by upwardly directed vertical forces due to machine insertion, soldering and crimping operations.
- the entire wire termination 204 of winding 203 is outside the perimeter of the base support member 202 of the bobbin and hence increases the amount of board space required by this bobbin assembly.
- a new terminal assembly embodying the principles of the invention and shown in Fig. 3, has a terminal aperture 305 that is parallel to the surface of the printed wiring board 310 on which the bobbin structure 311 is to be mounted.
- the terminal 301 has an L shape with the shorter leg of the pin inserted into the horizontal aperture 305.
- the shorter leg of the terminal 301a is preferably at a right angle with the longer leg 301b of the terminal.
- This aperture 305 is undercut under a shoulder 306 of the support member 302 of the bobbin so that the vertical leg 301b of the terminal 301 is under the shoulder 306 and does not extend horizontally beyond the perimeter of the bobbin support member 302.
- the wire termination 304 of the terminal end of winding 303 is wound around the vertical portion of terminal 301 and hence does not require extra mounting space on the printed circuit board on which the bobbin is mounted. Hence the required footprint of the bobbin structure is reduced to a minimum value.
- the insertion of the terminal 301 into a horizontal 305 aperture of the. bobbin support member 302 provides a mechanical locking arrangement for the terminal that is very resistant to forces vertical to the surface of board 310 Hence the bobbin terminal is unlikely to work loose from the bobbin support member 302.
- a phosphor bronze terminal is utilized for terminal 301 in the illustrative embodiment.
- the winding 303 may be polyurethane coated copper wire as small as 43 gauge and the bobbin may be plastic. These component constituents are disclosed for illustrative purposes and the substitution of other materials will be readily apparent to those skilled in the art.
- FIG. 4 A pictorial view of an overall bobbin structure 400, embodying the principles of the invention, is shown in Fig. 4.
- a winding 403 is wound about a central winding member 408 with wire terminations 404 and 414 wound about two terminals 401 and 411 respectively.
- the terminals are, as shown by terminals 431 and 432, inserted horizontally into the bobbin structure 400 and then formed with a right angle bend so that the terminals may be inserted into terminal receptacle of a printed circuit board on which the bobbin is mounted.
- Slots 450 in the bobbin provide mechanical support for the formal terminals.
- This bobbin structure 400 is mounted on a printed circuit board with the terminals secured into pin hole receptacles of a printed circuit board.
- the bobbin structure 400 includes first and second support members attached to opposing sides of member 408, supporting stand offs 420 which rest on the surface of the printed circuit board and provide support for the bobbin.
- the winding terminations 404 and 414 advantageously do not require any added board mounting space as is required with the prior art arrangement of Fig. 2.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
Description
- This invention relates to bobbin structures for magnetic components and in particular to a terminal assembly for a bobbin.
- Conventional bobbin terminals or pinouts are typically inserted into the underside of bobbin flange supports with the terminals remaining unformed. Only friction holds the bobbin terminals in their sockets. Bobbin terminals of board mounted magnetic components, that are inserted in the bobbin in this manner, have a tendency to pull out of the bobbin. A typical arrangement is shown in Fig. 1 wherein the
terminal 101 is inserted into a bobbin flange or mountingsupport member 102. The winding 103 of the bobbin is terminated by being wire-wrapped 104 about theterminal 101. The wire termination as wound has a vertical axis and in some applications may result in the magnetic component having a greater component height than is desirable. It is readily apparent that this arrangement permits the terminals to work their way out of the socket. - Terminals have been formed with a bend in the terminal to secure the terminals into the bobbin as shown in Fig. 2. In this particular arrangement the
terminal 201 is inserted into the topside of thebobbin support member 202. As is apparent however the forming of theterminal 201 still does not prevent theterminal 201 from working out of thesupport member 202 due to forces perpendicular to the planar surface of the printed circuit board on which it will be mounted. - The
winding 203 of the bobbin is, as shown, wound with a vertical axis and is terminated by being wound about the formed portion of theterminal 201 which is horizontal to the printed circuit board. Since the winding is attached externally to the terminal and beyond the perimeter of thebobbin support member 202, printed circuit board area is consumed unnecessarily. - Therefore, in accord with the invention, a new arrangement for attaching terminals to the bobbins of board mounted magnetic components reduces the amount of board real estate required for the component and increases the integrity of the terminal attachment to the bobbin.
- A new physical construction for attaching a phosphor bronze terminal to a plastic bobbin assembly permits a lower component height and a reduced footprint size as well as providing improved positive mechanical locking of the terminals to the bobbin. This mechanical locking is provided by the insertion of the attached end of the phosphor bronze terminal horizontally into the molded bobbin support member after which the terminal is formed by 90 degrees. The vertical member of the terminal is captured by slots provided in the outer surface of the bobbin. Support members,in addition, prevent lateral movement of the terminal. In this new configuration the formed end, inserted into the bobbin, is parallel to the printed circuit board surface, on which the bobbin is mounted, preventing the phosphor bronze terminal from working loose due to vibration and motion in the vertical axis direction.
- In the drawing:
- Fig. 1 is a view of a pin mounted into a bobbin support member according to the prior art;
- Fig. 2 is a view of a pin mounted into a bobbin support member according to the prior art;
- Fig. 3 is a view of a pin mounted therein in accord with the principles of the invention.
- Fig. 4 is a pictorial view of a bobbin having pins mounted therein in accord with the principles of the invention.
- A terminal mounting arrangement according to the prior art arrangement is shown in Fig. 1. This
terminal 101 is unformed and is inserted vertically into a vertical blind aperture of thesupport member 102 of a bobbin structure. Awire termination 104 of winding 103 is wound about theterminal 101. It is easily recognizable that in this arrangement theterminal 101 is very susceptible to being worked out of the terminal aperture by vertical forces. Theterminal 101 is subject to being pulled from the bobbin while the leads are undergoing any number of manufacturing processes, i.e., soldering, crimping to theboard 110, etc. - An alternative terminal mounting arrangement of the prior art shown in Fig. 2 utilizes an L
shaped terminal 201 having its short arm formed over the top rim of the bobbin support member aperture. This arrangement provides the inserted terminal with resistance to downward vertical forces although it is still susceptible to being worked out of the aperture by upwardly directed vertical forces due to machine insertion, soldering and crimping operations. - The
entire wire termination 204 ofwinding 203 is outside the perimeter of thebase support member 202 of the bobbin and hence increases the amount of board space required by this bobbin assembly. - A new terminal assembly, embodying the principles of the invention and shown in Fig. 3, has a
terminal aperture 305 that is parallel to the surface of the printedwiring board 310 on which the bobbin structure 311 is to be mounted. Theterminal 301 has an L shape with the shorter leg of the pin inserted into thehorizontal aperture 305. The shorter leg of theterminal 301a is preferably at a right angle with thelonger leg 301b of the terminal. - This
aperture 305 is undercut under ashoulder 306 of thesupport member 302 of the bobbin so that thevertical leg 301b of theterminal 301 is under theshoulder 306 and does not extend horizontally beyond the perimeter of thebobbin support member 302. Thewire termination 304 of the terminal end ofwinding 303 is wound around the vertical portion ofterminal 301 and hence does not require extra mounting space on the printed circuit board on which the bobbin is mounted. Hence the required footprint of the bobbin structure is reduced to a minimum value. - The insertion of the
terminal 301 into a horizontal 305 aperture of the.bobbin support member 302 provides a mechanical locking arrangement for the terminal that is very resistant to forces vertical to the surface ofboard 310 Hence the bobbin terminal is unlikely to work loose from thebobbin support member 302. - A phosphor bronze terminal is utilized for
terminal 301 in the illustrative embodiment. The winding 303 may be polyurethane coated copper wire as small as 43 gauge and the bobbin may be plastic. These component constituents are disclosed for illustrative purposes and the substitution of other materials will be readily apparent to those skilled in the art. - A pictorial view of an
overall bobbin structure 400, embodying the principles of the invention, is shown in Fig. 4. A winding 403 is wound about a central windingmember 408 withwire terminations terminals terminals bobbin structure 400 and then formed with a right angle bend so that the terminals may be inserted into terminal receptacle of a printed circuit board on which the bobbin is mounted.Slots 450 in the bobbin provide mechanical support for the formal terminals. - This
bobbin structure 400 is mounted on a printed circuit board with the terminals secured into pin hole receptacles of a printed circuit board. Thebobbin structure 400 includes first and second support members attached to opposing sides ofmember 408, supportingstand offs 420 which rest on the surface of the printed circuit board and provide support for the bobbin. In this arrangement thewinding terminations
Claims (2)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US401275 | 1989-08-31 | ||
US07/401,275 US5008644A (en) | 1989-08-31 | 1989-08-31 | Terminal assembly for linear magnetic component bobbin |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0415643A2 true EP0415643A2 (en) | 1991-03-06 |
EP0415643A3 EP0415643A3 (en) | 1992-05-27 |
EP0415643B1 EP0415643B1 (en) | 1995-10-25 |
Family
ID=23587080
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90309230A Expired - Lifetime EP0415643B1 (en) | 1989-08-31 | 1990-08-22 | Terminal assembly for linear magnetic component bobbin |
Country Status (4)
Country | Link |
---|---|
US (1) | US5008644A (en) |
EP (1) | EP0415643B1 (en) |
JP (1) | JPH0393204A (en) |
DE (1) | DE69023190T2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992020079A1 (en) * | 1991-05-03 | 1992-11-12 | Hohenloher Spulenkörperfabrik Gmbh & Co. | Coil former and process for procucing it |
EP0773563A1 (en) * | 1995-11-07 | 1997-05-14 | Marlene Weiner | Coil bobbin with two winding chambers |
EP0773564A1 (en) * | 1995-11-07 | 1997-05-14 | Peter Weiner | Coil bobbin |
EP1205950A1 (en) * | 2000-11-14 | 2002-05-15 | Teknoware Oy | Coil holder |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5670925A (en) * | 1996-09-10 | 1997-09-23 | Osram Sylvania Inc. | Bobbin, bobbin and core assembly, and inductor coil assembly for electronic ballast |
EP0954872B1 (en) * | 1997-01-21 | 2003-07-16 | Invensys Appliance Controls New Zealand Limited | Contact terminal arrangement for electrical built-in switching unit |
US6069550A (en) * | 1998-07-24 | 2000-05-30 | Huang; Sheng Min | Structure of connecting pins of a transformer reel |
DE29913484U1 (en) * | 1999-08-02 | 2000-12-07 | Tridonic Bauelemente | Ring body for holding windings for coils or transformers |
DE10114182C2 (en) * | 2001-03-23 | 2003-04-03 | Epcos Ag | Inductive component with wire guide slots |
US6897753B2 (en) * | 2002-09-03 | 2005-05-24 | Artesyn Technologies, Inc. | Housing for a transformer |
JP4737621B2 (en) * | 2006-01-30 | 2011-08-03 | Fdk株式会社 | Winding parts |
US7456717B2 (en) * | 2007-02-02 | 2008-11-25 | Astec International Limited | Electrical pin-type connector |
KR100783744B1 (en) | 2007-06-18 | 2007-12-07 | 안종덕 | A exercising device for lower-body |
CN101834049B (en) * | 2010-04-27 | 2011-12-07 | 东莞国亮电机有限公司 | Enameled aluminum wire winding and preparation method thereof |
TWI435350B (en) * | 2012-06-05 | 2014-04-21 | Delta Electronics Inc | Transformer |
US9362044B1 (en) * | 2013-03-04 | 2016-06-07 | Universal Lighting Technologies, Inc. | Magnetic component with multiple pin row bobbin |
TWI463508B (en) * | 2014-04-22 | 2014-12-01 | Yujing Technology Co Ltd | The improved structure of the transformer |
WO2016051481A1 (en) * | 2014-09-30 | 2016-04-07 | 三菱電機株式会社 | Rotating electrical machine and method for producing rotating electrical machine |
TWI729811B (en) * | 2020-05-14 | 2021-06-01 | 一諾科技股份有限公司 | Pin structure of transformer wire frame |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1226209B (en) * | 1964-02-01 | 1966-10-06 | Telefunken Patent | Coil foot with soldering pins for a small electrical coil |
US4105985A (en) * | 1977-02-24 | 1978-08-08 | Coils, Inc. | Lead attachment means and method for making electrical coils |
GB2129772A (en) * | 1982-11-08 | 1984-05-23 | Plessey Co Plc | A transformer bobbin |
JPS60208807A (en) * | 1984-04-03 | 1985-10-21 | Matsushita Electric Ind Co Ltd | High frequency coil |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2194502A (en) * | 1939-06-06 | 1940-03-26 | American Lava Corp | Coil support |
US2648031A (en) * | 1951-07-17 | 1953-08-04 | Gen Electric | Intermediate frequency transformer assembly |
US2889497A (en) * | 1955-01-10 | 1959-06-02 | Dole Valve Co | Solenoid construction |
DE2602834A1 (en) * | 1976-01-27 | 1977-07-28 | Lothar Sachsse | Lead wire fastening on coil former - uses hood shaped lead wire ends fitting in coil former recess under pressure of inserted sleeve |
-
1989
- 1989-08-31 US US07/401,275 patent/US5008644A/en not_active Expired - Fee Related
-
1990
- 1990-08-22 DE DE69023190T patent/DE69023190T2/en not_active Expired - Fee Related
- 1990-08-22 EP EP90309230A patent/EP0415643B1/en not_active Expired - Lifetime
- 1990-08-30 JP JP2226782A patent/JPH0393204A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1226209B (en) * | 1964-02-01 | 1966-10-06 | Telefunken Patent | Coil foot with soldering pins for a small electrical coil |
US4105985A (en) * | 1977-02-24 | 1978-08-08 | Coils, Inc. | Lead attachment means and method for making electrical coils |
GB2129772A (en) * | 1982-11-08 | 1984-05-23 | Plessey Co Plc | A transformer bobbin |
JPS60208807A (en) * | 1984-04-03 | 1985-10-21 | Matsushita Electric Ind Co Ltd | High frequency coil |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 10, no. 58 (E-386)7 March 1986 & JP-A-60 208 807 ( MATSUSHITA DENKI SANGYO ) 21 October 1985 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992020079A1 (en) * | 1991-05-03 | 1992-11-12 | Hohenloher Spulenkörperfabrik Gmbh & Co. | Coil former and process for procucing it |
EP0773563A1 (en) * | 1995-11-07 | 1997-05-14 | Marlene Weiner | Coil bobbin with two winding chambers |
EP0773564A1 (en) * | 1995-11-07 | 1997-05-14 | Peter Weiner | Coil bobbin |
EP1205950A1 (en) * | 2000-11-14 | 2002-05-15 | Teknoware Oy | Coil holder |
Also Published As
Publication number | Publication date |
---|---|
EP0415643A3 (en) | 1992-05-27 |
JPH0393204A (en) | 1991-04-18 |
DE69023190T2 (en) | 1996-05-02 |
EP0415643B1 (en) | 1995-10-25 |
US5008644A (en) | 1991-04-16 |
DE69023190D1 (en) | 1995-11-30 |
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